Evaluation of the Association of Polymorphisms in the Innate Immune System With the Risk for Cryptococcus Neoformans Infection in Patients Not Infected With HIV and Complications Associated With Cryptococcus Neoformans Infection

NCT ID: NCT00001701

Last Updated: 2017-07-02

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 300 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 1998-07-29

Brief Summary

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may contribute to either the predisposition or clinical course of infection with Cryptococcus neoformans. To test this hypothesis, we propose to analyze the allelic frequencies of 15 different genes (mannose binding lectin, Fc-gamma receptor IIa and IIb, Fc-gamma receptors IIIa and IIIb, myeloperoxidase, tumor necrosis factor-alpha and -beta, interleukin 1A and 1B, interleukin-1 receptor antagonist, interleukin-10, NRAMP-1, chitotriosidase, and chemokine receptor 5) and their intragenic polymorphic forms and to compare this data to the incidence and severity of C neoformans infection. With this study we hope to identify a group of molecules of innate immunity which influence the risk and severity of invasive C neoformans infection.

Detailed Description

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may contribute to either the predisposition or clinical course of infection with Cryptococcus neoformans. To test this hypothesis, we propose to analyze the allelic frequencies of 15 different genes (mannose binding lectin, Fc-gamma receptor IIa and IIb, Fc-gamma receptors IIIa and IIIb, myeloperoxidase, tumor necrosis factor-alpha and -beta, interleukin 1A and 1B, interleukin-1 receptor antagonist, interleukin-10, NRAMP-1, chitotriosidase, and chemokine receptor 5) and their intragenic polymorphic forms and to compare this data to the incidence and severity of C neoformans infection. With this study we hope to identify a group of molecules of innate immunity which influence the risk and severity of invasive C neoformans infection.

Conditions

Cryptococcosis

Eligibility Criteria

Inclusion Criteria

Patients diagnosed with Cryptococcus neoformans infection will be identified from a data base overseen by Dr. Peter Pappas.

Only patients diagnosed and treated in the United States and Canada will be included in this analysis.

Only patients who are not coinfected with HIV will be included in the study.

Patient samples will be collected and clinical data will be evaluated only after signed informed consent has been obtained.

• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Cancer Institute (NCI)

NIH

Sponsor Role: lead

Locations

University of Alabama

Birmingham, Alabama, United States

Countries

United States

References

Bellamy R, Ruwende C, Corrah T, McAdam KP, Whittle HC, Hill AV. Variations in the NRAMP1 gene and susceptibility to tuberculosis in West Africans. N Engl J Med. 1998 Mar 5;338(10):640-4. doi: 10.1056/NEJM199803053381002.

Reference Type: BACKGROUND

PMID: 9486992 (View on PubMed)

Blakemore AI, Tarlow JK, Cork MJ, Gordon C, Emery P, Duff GW. Interleukin-1 receptor antagonist gene polymorphism as a disease severity factor in systemic lupus erythematosus. Arthritis Rheum. 1994 Sep;37(9):1380-5. doi: 10.1002/art.1780370917.

Reference Type: BACKGROUND

PMID: 7945503 (View on PubMed)

Boot RG, Renkema GH, Strijland A, van Zonneveld AJ, Aerts JM. Cloning of a cDNA encoding chitotriosidase, a human chitinase produced by macrophages. J Biol Chem. 1995 Nov 3;270(44):26252-6. doi: 10.1074/jbc.270.44.26252.

Reference Type: BACKGROUND

PMID: 7592832 (View on PubMed)

Other Identifiers

98-C-0137

Identifier Type: -

Identifier Source: secondary_id

980137

Identifier Type: -

Identifier Source: org_study_id